You may have to cut and paste the text using your favorite text editor and then tell qbasic to run the file. There maybe some file extension assumptions. "help save" should give you some hints at how to save a simple program you type in such as a one line "hello world" program into a text file. "help run" should give you hints at how to specify a file to load and interpret.

print "hello world"

Basic is was designed to provide help and encouraging you to try things.